Question

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State in brief the changes that take place in a fertilised egg (zygote) till birth of the child in the human female reproductive system. What happens to the egg when it is not fertilised?​

Answer 1

Heya your answer goes like this -

Changes in fertilized egg: (i) Zygote/ fertilized starts dividing.

(ii) Implantation of zygote in the inner uterine wall.

(iii) Embryo starts growing with the help of the placenta which results in the development of the child.

(iv) Birth of a child as a result of rhythmic contraction of the muscles in the uterus.

(v) When egg is not fertilized, the inner lining of the uterus slowly breaks and comes out through the vagina as blood and mucous (Menstruation)

Hope it helps!! ✌️✌️

Answer 2

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>> The eggs gets fertilized in the oviduct.The fertilized egg , the zygote gets implemented in the lining of the uterus and starts dividing. The uterus prepares itself every month to receive and

nurture the growing embryo. The lining thickens and is richly supplied with blood to nourish the growing embryo.

>> The embryo gets nutrition from the mother’s blood with the help of a special tissue called

placenta. The development of the child inside the mother’s body takes approximately nine

months. On completion of 9 months, the child is born as a result of rhythmic contractions of the muscles in the uterus.

>> If the egg is not fertilised, the thick and nourishing lining of the uterus breaks and comes out through vagina as blood and mucous.